Bluetooth: Convert debug files to actually use debugfs instead of sysfs
[linux-2.6.git] / net / bluetooth / rfcomm / core.c
index cf16407..13f114e 100644 (file)
@@ -33,6 +33,8 @@
 #include <linux/init.h>
 #include <linux/wait.h>
 #include <linux/device.h>
+#include <linux/debugfs.h>
+#include <linux/seq_file.h>
 #include <linux/net.h>
 #include <linux/mutex.h>
 #include <linux/kthread.h>
@@ -2098,14 +2100,10 @@ static struct hci_cb rfcomm_cb = {
        .security_cfm   = rfcomm_security_cfm
 };
 
-static ssize_t rfcomm_dlc_sysfs_show(struct class *dev,
-                                    struct class_attribute *attr,
-                                    char *buf)
+static int rfcomm_dlc_debugfs_show(struct seq_file *f, void *x)
 {
        struct rfcomm_session *s;
        struct list_head *pp, *p;
-       char *str = buf;
-       int size = PAGE_SIZE;
 
        rfcomm_lock();
 
@@ -2114,29 +2112,33 @@ static ssize_t rfcomm_dlc_sysfs_show(struct class *dev,
                list_for_each(pp, &s->dlcs) {
                        struct sock *sk = s->sock->sk;
                        struct rfcomm_dlc *d = list_entry(pp, struct rfcomm_dlc, list);
-                       int len;
 
-                       len = snprintf(str, size, "%s %s %ld %d %d %d %d\n",
-                                       batostr(&bt_sk(sk)->src), batostr(&bt_sk(sk)->dst),
-                                       d->state, d->dlci, d->mtu, d->rx_credits, d->tx_credits);
-
-                       size -= len;
-                       if (size <= 0)
-                               break;
-
-                       str += len;
+                       seq_printf(f, "%s %s %ld %d %d %d %d\n",
+                                               batostr(&bt_sk(sk)->src),
+                                               batostr(&bt_sk(sk)->dst),
+                                               d->state, d->dlci, d->mtu,
+                                               d->rx_credits, d->tx_credits);
                }
-
-               if (size <= 0)
-                       break;
        }
 
        rfcomm_unlock();
 
-       return (str - buf);
+       return 0;
+}
+
+static int rfcomm_dlc_debugfs_open(struct inode *inode, struct file *file)
+{
+       return single_open(file, rfcomm_dlc_debugfs_show, inode->i_private);
 }
 
-static CLASS_ATTR(rfcomm_dlc, S_IRUGO, rfcomm_dlc_sysfs_show, NULL);
+static const struct file_operations rfcomm_dlc_debugfs_fops = {
+       .open           = rfcomm_dlc_debugfs_open,
+       .read           = seq_read,
+       .llseek         = seq_lseek,
+       .release        = single_release,
+};
+
+static struct dentry *rfcomm_dlc_debugfs;
 
 /* ---- Initialization ---- */
 static int __init rfcomm_init(void)
@@ -2153,8 +2155,12 @@ static int __init rfcomm_init(void)
                goto unregister;
        }
 
-       if (class_create_file(bt_class, &class_attr_rfcomm_dlc) < 0)
-               BT_ERR("Failed to create RFCOMM info file");
+       if (bt_debugfs) {
+               rfcomm_dlc_debugfs = debugfs_create_file("rfcomm_dlc", 0444,
+                               bt_debugfs, NULL, &rfcomm_dlc_debugfs_fops);
+               if (!rfcomm_dlc_debugfs)
+                       BT_ERR("Failed to create RFCOMM debug file");
+       }
 
        err = rfcomm_init_ttys();
        if (err < 0)
@@ -2182,7 +2188,7 @@ unregister:
 
 static void __exit rfcomm_exit(void)
 {
-       class_remove_file(bt_class, &class_attr_rfcomm_dlc);
+       debugfs_remove(rfcomm_dlc_debugfs);
 
        hci_unregister_cb(&rfcomm_cb);